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0
votes
1answer
170 views

High CPU load on Centos with process sync_supers

My centos server has high cpu load right now. Please see the Htop output below. sync_supers is very suspected but I don't know how to kill it. Any suggestions?
0
votes
1answer
40 views

Diagnose what is causing Linux system load

I understand that system load is kernel usage such as IO or network. If you don't believe you have high load of either of those two items, what would be some recommended steps to track down what is ...
0
votes
0answers
45 views

High load and io caused by apache on Debian 7 server?

lately my VPS (4 CPU, 4GB RAM, 50GB HardDisk with around 10 websites, all very low real visitors (max. 100 / day) but maybe plenty of bots) got shut down by the hosting company. Reason: excessive ...
0
votes
0answers
16 views

Avira Webgate Troubleshooting: High CPU load

we are using Avira Webgate as Virusscanner for squid. We have two Servers running the Avira Webgate and see in both servers the same behaviour: The CPU is nearly always at 100% CPU whicht is fine on ...
0
votes
0answers
5 views

double router configuration for fxs

I have a very cheap router provided by the ISP, which crashes now and then because there are too many devices attached to the wifi. I want to buy a good adsl+router supporting the AC frequencies, but ...
0
votes
0answers
33 views

IHS(Apache), ACE30 and Congnos issue

I need a bit of help with a abnormal issue that we have observed in our environment. Just to be clear the backend is fine when using the development environment or current prod servers but the newly ...
0
votes
0answers
35 views

How to estimate server load?

I know a time of some cryptographic operation - let's say, for instance, it takes 0.4598s to perform a cryptographic action. I have a Intel Xeon 3.00GHz CPU (multi-core). How can I calculate (I skip ...
0
votes
1answer
74 views

Network traffic simulation with one computer

I have a Linux box with a gigabit Ethernet interface in a local network. With this single computer, I need to simulate HTTP traffic like if it was coming from 20 machines (hence with 20 different IP ...
1
vote
1answer
77 views

VM load and ping problems after replacing server motherboard

Recently, we had to replace the motherboard of one of our servers. The procedure was done by IBM as it had guarantee. The server runs ESXi 5.1, with several virtual machines, including our main mail ...
0
votes
1answer
42 views

When load balancing, must all copies of static web page be exactly the same?

I am used to get answers for everything on the web, but not this time... Yesterday I enable Amazon DNS weight functionally to load balance 7 websites between two different IP addresses (split ...
0
votes
4answers
76 views

Proper way of interpreting system load on a 4 core 8 thread processor

As we all know, load of 1.00 on a single processor means that there is a load of 100%. Analogically a 4.00 load on a quad core would be 100%. How should I interpret load on a 4 core 8 thread ...
0
votes
0answers
45 views

Efficient way to use maldet scanner

I don't know if this is the right place to ask this question or not. Sorry if this is not the right place. I have installed the maldet (Linux Malware Detect) scanner to scan malware from the server. ...
0
votes
1answer
16 views

How to interpret system load on a virtual server?

I understand that system load as reported by linux 'top' is the avg number of processes waiting for CPU time and you should thus take the number of CPU cores into account when interpreting the load. ...
0
votes
1answer
49 views

Is there anyway to find what php scripts consume more resources

I want to easily find load cause, Is there a way to display resource usage for php scripts like this. Cpu: index.php 30% something.php 10% ... memory: index.php 50% something.php 10% ..
0
votes
0answers
82 views

Server load spikes after yum update and Laravel installation

The Platform: Centos 6.3 PHP 5.4.30 Apache 2.2.15 mysql Ver 14.14 Distrib 5.5.37, for Linux (x86_64) using readline 5.1 4 CPUs 12 GB RAM 1TB Hard Disk Prefork Settings for Apache <IfModule ...
0
votes
2answers
90 views

Apache Causing High Load on Server

Whenever Apache kills child process to create new ones after the MaxRequestPerChild is satisfied, I see Defunct Apache processes in the ps output. There defunct processes clear by themselves in a ...
1
vote
1answer
42 views

High load on a particular time

I am facing one odd problem in one of my remote servers (Centos 6). Its load became high by 09:30 AM and became normal by 09:40. See my SAR -q on 2 days. 09:00:01 PM 4 199 0.95 ...
1
vote
1answer
78 views

Increase bandwidth per connection on a server

Requirement: I am load testing Rabbit MQ by generating a large number of requests/sec to the server (Server config: 8 core, 16GB). To achieve the above, I am generating load from a client machine at ...
1
vote
1answer
246 views

preventing ipmi kernel drivers from loading

I'm trying to prevent the ipmi kernel modules from loading on a server with a SuperMicro X8DTG-D motherboard running Ubuntu 14.04. My motivation for doing so is that the modules sometimes seem to take ...
3
votes
2answers
700 views

Apache 2.4.9 100% CPU load of random workers

I own a t1.micro EC2 instance. After release upgrade of Ubuntu to saucy I got Apache 2.4.6 and I started noticing 100% CPU load like this top - 19:37:58 up 2:55, 2 users, load average: 3.90, 2.90, ...
1
vote
3answers
289 views

Load Balancing - PHP/Mysql [closed]

I have a server which relies heavily on a MYSQL database. Recently, there have been load issues and max mysql connection issues. My idea is to have a primary server with the php code and files and a ...
0
votes
1answer
67 views

Problems with nginx server load rediculous spikes

we are having a problem with the load of our server using nginx and not sure what to do about it. We are running ubuntu 12.04. Any ideas of what is going on and how to fix it? Below is a screenshot of ...
0
votes
1answer
1k views

Configure Apache MPM worker module for 1000+ users

I have youtube proxy site http://playit.pk, the issue is that whenever users increase over 500 at an instant the server gets really slow. I am using MPM Worker module and have tried several configs.. ...
0
votes
0answers
779 views

Load testing HTTPS with Siege (open auth)

I am trying to load test our new website with siege. It is currently behind basic auth. I have edited my .siegerc file to include the right username and password (I've checked many times that it is ...
0
votes
1answer
93 views

What are acceptable failure rates in load testing scenarios

I am doing a report on load testing for a client. I am using a service called blitz IO. He would like to handle 1000 concurrent users at 500ms. Every time I have run a test like this there it has ...
0
votes
0answers
44 views

mpm worker - high server load

i have 10 wordpress site with this plugins : w3 total cache + wordpress seo my server load some time goes up. vps : 1gb ram , 4 cpu 2.6 mpm worker : StartServers 2 ServerLimit ...
0
votes
1answer
60 views

Nginx load balancing based on vhosts

Well, I've a setup with 1 load balancers and 2 backends (with nginx). They are both serving two website, beta.xxx.fr and xxx.fr. I want my load balancer to serve both websites. Have you got any idea ...
0
votes
2answers
46 views

Server load and user activity emulation software [closed]

A couple of years ago i saw a software set, whose purpose was emulating user/client activity and stress testing remote servers (mail, web, etc.). It can be installed under linux, requires a separate ...
0
votes
1answer
46 views

Off-loading HTTP traffic

Need help in off loading HTTP traffic. My web server is having a lot of traffic resulting in slow response. It is also getting requests on port 80 from various mobile applications too. Traffic from ...
-1
votes
1answer
1k views

Best Apache & MySQL config for 16GB and 8 Cores [closed]

I'm having some trouble with my servers. I'm having a peak and my servers load are very high. I have 3 servers, one for frontend, one for database (mysql) and one for delivery images (no problem with ...
1
vote
2answers
256 views

High Disk I/O on server reboot

A CentOS 5.8 machine has high Disk I/O upon starting up. The processes taking up disk IO are kmirrord, kjournald and pdflush. I have done the performed the following: 1) Mounted the filesystem with ...
0
votes
1answer
1k views

How to view CPU Load on Windows Server 2008 [duplicate]

It's a simple question, really, I'd like to check the CPU Load of my Windows Server 2008 machine. This value gets reported to Zabbix, but I have no clue where Zabbix gets the value from. All I can ...
0
votes
1answer
38 views

How to disable search body in dovecot?

We run mail server of 30k e-mail accounts (Maildir) with dovecot imap server. We suffer from high IO load, especially when a user starts to search large imap folders. Is any way of preventing search ...
0
votes
1answer
428 views

Ksoftirqd high load

Recently I notice that one ksoftirqd is always in top of my processlist and takes 90% - 100% cpu. PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND ...
1
vote
1answer
80 views

Acceptable linux load - count HT cores?

So the conventional notion of "acceptable load" on a *nix based box is "1.00 minus some overhead (10% give or take) per core". So if we have a 4 core machine, a load of 3.50 would be acceptable. ...
1
vote
1answer
107 views

Beginner at load balancing. How would I load balance multiple servers on different racks?

I was wondering if I had the right idea for load balancing lets say more then 42 servers. Would it be like this: As an example I'm using a performance Load Balancer with 10gbps input and lets say ...
0
votes
4answers
1k views

CentOS 6.4 running Asterisk 11.5 with high load, low CPU/memory/disk IO

I have an Asterisk server doing automated calls and I'm noticing an unexplained high load in it. The server is only running Asterisk. Database and other support applications run in a different ...
0
votes
1answer
116 views

How to setup a load balancing / fail-proof web server under Linux [closed]

the company i work for currently has 2 linux servers running under Debian that are being paid for. One of them currently hosts multiple websites + mail services as well. The other linux currently is ...
0
votes
1answer
645 views

Ubutu/KVM: High iowait on guest nodes, root node fine

Recently one of my boxes has been running quite slowly. It's running Ubuntu 12 LTS and kvm to split the server into several nodes. The box has 2 normal SATA drives using software RAID-1. One of the ...
3
votes
1answer
420 views

Measuring load - %CPU in top is different than %us

When I run TOP on a remote server, I see a very small system utilization (3.8%us). However, for the actual process I am seeing 29.6% of the CPU. Since this server has 8 CPU cores, is the %CPU the ...
0
votes
2answers
158 views

Munin's load plugin does not appear

I just did a fresh install of Munin 2.0.6-4 on a Debian 7.1 server from the debian repositories. The "load" plugin appears as loaded: # munin-node-configure | grep load load | ...
0
votes
1answer
110 views

Images load very slow on Linux server

Since some days images on our website load awfully slow without any changes on the site performed from our end. The images load really slow, but if I then save the image from the website the download ...
0
votes
1answer
68 views

Force Server to Change Load Average

Recently we got a server with Limestone Networks to operate as a worker in our web-cluster. The main infrastructure behind the cluster (being the database and load balancer) are located in Phoenix ...
0
votes
2answers
482 views

Keeping F5 (refresh button) pressed leads to high apache server load

We are running a forum software (Woltlab Burning Board) on our server and found out that if at least two users keep reloading the website very quick (keeping F5 button pressed), the server load goes ...
1
vote
1answer
51 views

Load times quick individually, very slow when put together

I'm running a standard debian apache2 web server. Recently, I've noticed my load times slow down substantially. I've checked exactly which resources are taking a long time to load, and there are 2 or ...
1
vote
1answer
502 views

CPU Usage vs load average [duplicate]

I'm running debian iostat -x Linux 2.6.32-5-amd64 (server56856.uk2net.com) 27/04/13 _x86_64_ (4 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 4.59 0.01 ...
3
votes
3answers
109 views

Running a process within a limited amount of resources, in Linux

Is there a way to run a process (e.g. ls, du, find .. etc) within a strictly limited amount of resources (i.e. cpu, memory, I/O) aside from using nice & ionice, as I didn't find them effective ...
-1
votes
2answers
53 views

server busy threshold? [closed]

i have a server with 512MB RAM running mysql and apache service. I have joomla site inside my server. I want to ask, is there a brief threshold limit of RAM when the server will be stated as busy? ...
-1
votes
1answer
3k views

GlusterFs - high load 90-107% CPU

I try and try and try to performance and fix problem with gluster, i try all. I served on gluster webpages, php files, images etc. I have problem after update from 3.3.0 to 3.3.1. I try 3.4 when i ...
0
votes
1answer
119 views

Where should I configure the Director IP when using LVS NAT load balancing?

The subject is quite self explanatory, I have a load balancer running LVS ldirectord, and the follwoing configuration: # ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot ...